Spring-heel.



E. P. DARGY.

SPRING HEEL. APPLICATION FILED-MAR. 4, 1908.

903,179. Patented Nov. 10, 1908.

l V2 n i l 5 6 f////////////////// il/%ln|lllln The lower co FRANK P. DARCY, OF KALAMZOO, MICHIGAN sienne-HEEL.

Specication of Letters Patent.

Patented Nov. 10, 1908.

Application filed March 4, 1908. Serial No. 419,149.

To all whom it may concern: i

Be it known that I, FRANK P. DARGY, a citizen of the United States, residing at Kalf mazoo, Michigan, have invented certain new and useiul lin roveinents in Shing-Heels,

of which the to lowing is vaspeoi ication.

rlhis invention relates to improvements in Vspiing heels.

The objects of this invention are: First, Ato provide animproved spring heel of yielding material, such as rubber, which shall have the' desired resilient ualities and at the saine time be very dura-b e. Second., to provide an improved spring heel which shall be pracf tically anti-slipping.

Further objects, and objects relating to structural details, will definitely appear 'from the detailed description to follow.

I accomplish the objects of niy invention by the devices and'ineans described in the following specification. l The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustrated in the accomanying drawing, forming a part oi this sp'ecication, in which:

Figure 1 is a side elevation of my improved spring heel, portions being broken away to s iow structural details. Fig. 2 is a cross section, taken on a linel corres onding to line 2 2 of Fig. 1, looking in the irection ot the little arrows at the ends of the section lines. Fig. 3 is a ers ective view of the spring 2 which is embed ed in the yielding body portion. Fig. 4 is a cross section corresponding to that ol Fig. 2, of a modied construction, the spring being conical in form. Fig. 5 is a erspective view of the conical spring, which is embedded in the body of the mod'iied construction shown in Fig. 4.-

In the drawing, similar reference numerals reifer to similar parts throughout the several -views.

Referring to the drawing; the body l is made of suitable yielding material, preterablv rubber, and, in forn'iing the same, it is molded into the desired shape. In the body, l embed a coiled spring 2. This s )ring is preferably coiled into the form oi the heel, so` that its several coils lie adjacent to the periphery of the heel. The ends of the coils 3 are preferabl turned inwardly, as illustrated, to more iirin y secure the saine in-the body, and to strenglthen and support the body,

i of the spring is arranged so that its lower edge lies in substantially the same plane as the bottom of the heel, so that it is adapted to receive the wear in use. I preferably serrato this lower coil, as clearly :toot-hold.

The body is rovided with a central cavity is provided with a liorizontally-arranged partition or diaphragm 6, this partition or diaphragm being preferably 'formed of the same material or integrally with the body ortion. The object ot this is to provide a vo'lding or anti-slipping'means When in use, the heel is vpressed down upon the walk or ground, and the diaphragm yielding sli htly, forms a slight suction to assist in ho ding the heel to the ground. A -further advantage is that this cavity lightens the heel an reduces the amount of material used. The spring supports the body so that the heel is not materially weakeiiedby providing the central. cavity, and, further, the spring receives the wear so that the heel keeps its shape tor a long period oi5 time. lt is iound in practice that heels 'forinedof rubber, while they possess c uitc satisfactory re- .silient qualities, are likely to soon round ofi 'at the edges, which renders them objection.- able in that the user is likely to slip,-that is, the heels do not have a iirm hold' upon the ground.

In the modified construction shown in ,Fig 4, the spring 2 is lielically coiled. This arrangement has a slight advantage in that the several coils oi the spring are so located that they do not detract quite so much 'from the resiliency of the yieldabie body, as is the case in the construction shown in Figs. l', 2 and 3. However, it is found thatA heels formed as there illustrated ossess the required spring cpiality, and tie structure is very economica to produce, and at the same time, are durable and very satisfactory in use. i Having thus described my invention, wh at I claim as new and desire'to secure by Letters Patent is:

, i. lieel consisting of a body portion oit yielding material having a central. cavity therein open at the bottoni, said cavity having a horizontally-arranged dia liragm or partition across the sameian a coiled spring embedded in said body, said spring being arranged so that its lower coil lies adappears at 4 in Fig. so as to aiford a better' 5 opening at t ie lower end, and this cavity Stentially in the Sonie plane as the bottom of l the heel.

3. A heel consisting of n, body portion of i yielding material; and a eoilerl Spring einberlded in said body, seid spring being `ara ranged so that its lower coil lies adjacent to l the periphery of the body, the lower edge of the lower coil lying substantially in the saine l plane es the bottom of the heel,

fl. A. heel consisting of e body portion of `yielding material having e centran' cavity therein open et the bottom, Said cavity lia-vlng a horizontally-mranged yieldablo, diaphragm or partition across the seme; nml o coiled spring embedded in Said bofly oboui said cavity.

lin Witness Where-of, l have hereunto set my hand ond seal in the presence of two witnegeer. 

